<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>1769</termId><termName>IONOSFERA</termName><termType>TT</termType><termLanguage>es</termLanguage><termVocabulary>Tesauro Ambiental de Colombia</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>IONOSFERA</termSortkey><termNote label="Scope"><![CDATA[ Capa baja de la termosfera (capa superior de la atmósfera) que empieza a una altitud de 80 Km y finaliza a 550 Km que contiene una gran cantidad de iones y electrones libres. ]]></termNote><termCreatedDate>2026-05-25 01:03:53</termCreatedDate><relation><relationType>UF</relationType><termId>2548</termId><termName>TERMOSFERA</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>500</termId><termName>CAPAS ATMOSFÉRICAS</termName><termType>ND</termType></relation><relation><relationType>RT</relationType><termId>246</termId><termName>ATMÓSFERA</termName><termType>PT</termType></relation></term>  </Zthes>